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GIS Resources

Spatial and Numeric Data Services guide to GIS data available at the University of Calgary.

Digital Elevation Models

A digital elevation model (DEM) is a 3D CG representation of a terrain's surface created from a terrain's elevation data.

Calgary

 Alberta

  • Calgary Regional Partnership 2017 10m, Calgary-Chestermere (at SANDS)
  • LiDAR 15m, description | index and download
    • ASCII Format By Township (meridian-range-township)  | Contacts SANDS (maps@ucalgary.ca) to obtain.
  • AltaLIS 10m, 1:20k grid (quarter 1:50k NTS grid) and province wide (seamless) (at SANDS)
  • AltaLIS raw DEMs open data, 1:20k grid
    • processing: contact SANDS for instructions
  • DMTI 30m, 1:50 NTS grid | download
    • processing: ArcToolbox -> Conversion Tools -> ASCII to raster
    • define projection: ArcToolbox -> Data Management Tools -> Projections -> Add coordinate system -> import from dem file
  • ArcCanada3, province wide | download
  • Grand Prairie LiDAR, divided by quarter section

Canada

United States

International 

  • ArcticDEM an NGA-NSF public-private initiative to produce a high-resolution, digital surface model of the Arctic using optical stereo imagery, high-performance computing, and open source photogrammetry software
  • ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer)
    • coverage: global, 1 arc second (30m) resolution, 1 x 1 degree tiles, geotiff format
    • use USGS Earth Explorer to download
  • GTOPO30
  • OpenTopographydistributor of free high-resolution topographic data, related tools, and resources
  • SRTM (Shuttle Radar Topography Mission)
    • coverage: latitude 57 south - 61 north, 30m resolution

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